import 'dart:math';

import 'package:flutter/material.dart';

class RoomList extends StatefulWidget {
  RoomList({super.key, required this.point, required this.building});

  String? point;
  String? building;

  @override
  State<RoomList> createState() => _RoomListState();
}

class _RoomListState extends State<RoomList> {
  // 1. 定义初始数据
  Map data = {
    'point': '', // 小区信息
    'building': '', // 楼栋信息
    'rooms': [], // 随机产生的房间号
  };

  @override
  void initState() {
    super.initState();
    fakeData();
  }

  void fakeData() {
    // 1.1 随机产生房间的数量 5-8
    Random random = Random();
    int size = random.nextInt(4) + 5;
    // 1.2 随机产生房间号  102 2002
    List rooms = [];
    for (var i = 0; i < size; i++) {
      // 1.2.1 随机产生楼层 1-20
      int floor = random.nextInt(20) + 1; // 1-20
      // 1.2.2 随机产生房间号 1-4
      int no = random.nextInt(4) + 1;
      // 1.2.3 组合房间号放入数组
      String room = '${floor}0$no';
      if (rooms.contains(room)) continue; // 去重处理
      rooms.add(room);
    }
    // 1.3 更新数据
    setState(() {
      data = {
        'point': widget.point,
        'building': widget.building,
        'rooms': rooms,
      };
    });
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
        appBar: AppBar(
          title: const Text('选择房间'),
        ),
        body: ListView.builder(
          itemBuilder: (BuildContext context, int index) {
            return Container(
                color: Colors.white,
                padding: const EdgeInsets.all(10),
                child: GestureDetector(
                  onTap: () {
                    Navigator.pushNamed(context, '/house_form', arguments: {
                      'point': data['point'],
                      'building': data['building'],
                      'room': data['rooms'][index]
                    });
                  },
                  child: Row(children: [
                    Expanded(
                        child: Text(
                            '${data['point']}${data['building']}${data['rooms'][index]}室')),
                    const Row(children: [
                      Icon(Icons.arrow_forward_ios,
                          size: 16, color: Colors.black),
                    ])
                  ]),
                ));
          },
          itemCount: (data['rooms'] as List).length,
        ));
  }
}
